Developed as part of a 104-hour course on adult residential care homes (ARCHs), this 50-minute lesson is designed to enable a student to: (1) define a bedsore; (2) list and describe three major causes of bedsores; (3) identify potential bedsore sites in the back-lying, side-lying, and sitting positions; and (4) calculate the risk for developing bedsores given a risk chart and a specific problem. The lesson plan begins with information on the course for which the lesson was designed; equipmenet and audiovisual aids needed; requirements for student materials; course objectives; bibliographic references; and special remarks for the instructor. Next, a step-by-step outline of of the instructor's presentation is provided in a format indicating the length of time and the equipment or other aids necessary for each step of the lesson. Transparency masters are included. (PAA)